Home / 6,385.80-8,812.31-3,591.30

Finding the Fourth Proportional to 6,385.80, 8,812.31 and 3,591.30

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Solution

The fourth proportional to 6,385.80, 8,812.31 and 3,591.30 is: 4,955.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.80 : 8,812.31 = 3,591.30 : x
  2. Step 2: Convert to fraction form
    6,385.80/8,812.31 = 3,591.30/x
  3. Step 3: Cross multiply
    6,385.80x = 8,812.31 × 3,591.30
  4. Step 4: Simplify right side
    6,385.80x = 31,647,613.82
  5. Step 5: Solve for x
    x = 31,647,613.82/6,385.80
  6. Step 6: Final answer
    x = 4,955.94

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.